參數(shù)資料
型號： TDF8554J/N4
廠商： NXP SEMICONDUCTORS
元件分類： 音頻／視頻放大
英文描述： 44 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM37
封裝： PLASTIC, SOT725-1, 37 PIN
文件頁數(shù)： 33/56頁
文件大小： 597K
代理商： TDF8554J/N4
TDF8554J
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 1 — 31 August 2011
39 of 56
NXP Semiconductors
TDF8554J
4
45 W power amplifier with multiple voltage regulator
Table 26.
Voltage regulator characteristics
Refer to test circuit (see Figure 30) at Tamb =25 C; VP = 14.4 V; unless otherwise specified. Tested at Tamb =25 C;
guaranteed for Tj = 40 C to +150 C.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
Supply
VP
supply voltage
regulators 1, 3, 4 and 5 on
10.0
14.4
18
V
standby regulator 2 switched on
4.0
-
V
standby regulator 2 in regulation
6.3
-
50
V
Vth(dis)
disable threshold voltage
regulator 1, 3, 4 and 5 on; switches
1 and 2 on
18.1
22
-
V
Iq(tot)
total quiescent current
standby mode; VP = 14.4 V
150
190
A
Reset output (push-pull stage, pin RST)
Vth
threshold voltage
regulator 2; VP rising;
Io(reg2) =50 mA
VO(reg2)
0.2
VO(reg2)
0.1
VO(reg2)
0.04
V
regulator 2; VP falling;
Io(reg2) =50 mA
VO(reg2)
0.2
VO(reg2)
0.15
VO(reg2)
0.1
V
Isink
sink current
LOW-level; VRST 0.8 V
1
-
mA
Isource
source current
HIGH-level; VRST = VO(reg) 0.5 V;
VP = 14.4 V
200
600
-
A
tr
rise time
50
s
tf
fall time
[2] -10
50
s
Reset delay (pin RESCAP)
Ich
charge current
VRESCAP =0V
1
4
8
A
Idch
discharge current
VRESCAP =3V
VP 4.3 V
17
-
mA
Vth(RST)
threshold voltage on pin RST
TDF8554J/N2
2.5
3
3.5
V
TDF8554J/N4
1.6
2.1
2.6
V
td(rst)
reset delay time
without CRESCAP
[3] -40
-
s
CRESCAP =47nF; see Figure 22
35
100
s
Regulator 1 audio supply: pin REG1; IO = 5 mA unless otherwise specified
VO(reg)
regulator output voltage
0.5 mA
I
O 400 mA;
12 V < VP <18V
IB2[D3:D2] = 01
7.9
8.3
8.7
V
IB2[D3:D2] = 10
8.1
8.5
8.9
V
IB2[D3:D2] = 11
8.3
8.7
9.1
V
SVRR
supply voltage rejection ratio
fripple =120 Hz; Vripple = 2 V (p-p)
50
60
-
dB
Vdo
dropout voltage
VP =7.5 V
IO = 200 mA
-
0.4
0.8
V
IO = 400 mA
-
0.6
2.5
V
IO
output current
VO 7V
[5] 400
700
-
mA
IOS
output short-circuit current
RL 0.5
190
-
mA
Line regulation
V
O
output voltage variation
12 V
V
P 18 V
-
50
mV
Load regulation
V
O
output voltage variation
5 mA
I
O 400 mA
-
100
mV
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